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Mysql Tutorial

How to solve the problem of mysql cannot open shared library

This article addresses MySQL's "unable to open shared library" error. The issue stems from MySQL's inability to locate necessary shared libraries (.so/.dll files). Solutions involve verifying library installation via the system's package m

Mar 04, 2025 pm 04:01 PM

How to query the data volume of all tables in mysql

This article details methods for querying MySQL database size. It presents SQL queries to determine total database size, individual table sizes (data and index), and row counts, using INFORMATION_SCHEMA. Automation via scripting is also discussed f

Mar 04, 2025 pm 04:00 PM

How to query the total number of tables in mysql

This article details methods to count tables in MySQL. It focuses on using INFORMATION_SCHEMA.TABLES for efficient queries, providing SQL commands to count tables within the current or a specified database. Alternative methods are briefly mentione

Mar 04, 2025 pm 03:59 PM

How to query the number of tables in mysql

This article details how to determine the number of tables and list all tables within a specific MySQL database using SQL queries. It leverages the information_schema database and utilizes COUNT(DISTINCT TABLE_NAME) for efficient table counting. Si

Mar 04, 2025 pm 03:58 PM

How to use stored procedures in MySQL

This article explains how to create and use stored procedures in MySQL. It details procedure creation, parameter passing (IN, OUT, INOUT), calling procedures, and debugging techniques. The benefits discussed include improved performance, reduced ne

Mar 04, 2025 pm 03:57 PM

Resolving MySQL Port Conflicts: A Step-by-Step Guide

This guide addresses MySQL port conflicts, where another application uses port 3306. It details identifying the conflicting process using OS-specific commands (netstat/ss on Linux, Task Manager/PowerShell on Windows), common causes (another MySQL in

Mar 04, 2025 pm 03:56 PM

What is SQLite? Comprehensive overview

This article provides a comprehensive overview of SQLite, a self-contained, serverless relational database. It details SQLite's advantages (simplicity, portability, ease of use) and disadvantages (concurrency limitations, scalability challenges). C

Mar 04, 2025 pm 03:55 PM

Run MySQl in Linux (with/without podman container with phpmyadmin)

This article compares installing MySQL on Linux directly versus using Podman containers, with/without phpMyAdmin. It details installation steps for each method, emphasizing Podman's advantages in isolation, portability, and reproducibility, but also

Mar 04, 2025 pm 03:54 PM

Is PostgreSQL better than MySQL?

PostgreSQL and MySQL are popular relational databases, each with strengths and weaknesses. PostgreSQL excels in data integrity, complex data modeling, and advanced features, while MySQL prioritizes speed and ease of use for simpler applications. Th

Mar 04, 2025 pm 03:53 PM

Reduce the use of MySQL memory in Docker

This article explores optimizing MySQL memory usage in Docker. It discusses monitoring techniques (Docker stats, Performance Schema, external tools) and configuration strategies. These include Docker memory limits, swapping, and cgroups, alongside

Mar 04, 2025 pm 03:52 PM

How to check which tables contain data in the database

This article explores methods for identifying data-containing database tables. It compares querying metadata (e.g., using MySQL's information_schema) with more efficient approaches like the EXISTS clause, which avoids full row counts. Database mana

Mar 04, 2025 pm 03:51 PM

Beginner's Guide to MySQL Character Sets and Collisions

This guide addresses MySQL role and permission conflicts. Improperly configured roles cause functional issues and security risks. It details common causes (inconsistent assignments, overlapping roles, inheritance issues), management strategies (RBA

Mar 04, 2025 pm 03:50 PM

Running multiple MySQL versions on MacOS: A step-by-step guide

This guide demonstrates installing and managing multiple MySQL versions on macOS using Homebrew. It emphasizes using Homebrew to isolate installations, preventing conflicts. The article details installation, starting/stopping services, and best pra

Mar 04, 2025 pm 03:49 PM

Which should you use mysql utfs utfs?

This article argues for using UTF8MB4 over UTF8 in MySQL databases. UTF8MB4, a 4-byte encoding, supports full Unicode, including emojis, unlike the older, 3-byte UTF8 (utf8mb3) which limits support to the Basic Multilingual Plane. While UTF8MB4 has

Mar 04, 2025 pm 03:48 PM